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1 year ago

Select the correct locations in the images.

Biology

1 answer:

Arlecino [84]1 year ago

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Homozygous individuals' genotype is composed of the same type of alleles. In this example, the offspring with homozygous alleles for the smooth pod trait are SS.

<h3>What is homozygous genotype?</h3>

The term homozygosis is used to refer to the genotype of individuals that carry the same type of alleles.

Let us remember that alleles are the alternative forms in which a gene can be expressed.

To understand the concept, let us think about a diallelic gene, which is a gene that has two types of alleles.

Dominant allele → let us represent it with an A

Recessive allele → let us represent it with an a

Homozygous individuals will have two alleles of the same type

AA → homozygous dominant because it carries the dominant alleles

aa → homozygous recessive because it carries the recessive alleles

Heterozygous individuals are those that carry two types of alleles, dominant and recessive → Aa

In the exposed example,

the dominant allele → S → codes for smooth

the recessive allele → s → codes for constricted

Cross 1: Two homozygous individuals are crossed

Parentals) SS x ss

Phenotype) smooth pods constricted pods

F1) The first generation is composed only of heterozygous inviduals → Ss

The whole generation has smooth pods because they carry the dominant allele which expresses the dominant phenotype.

Cross 2: Two heterozygous individuals are crossed

Parentals) Ss x Ss

Phenotype) smooth pods

F2) The second generation is composed of

1/4 = 25% homozygous dominant indiviudals →<u> SS → smooth</u>
1/2 = 50% heterozygous inviduals → Ss → smooth
1/4 = 25% homozygous recessive indiviudals → ss → constricted

The offspring with homozygous alleles for the smooth pod trait are SS.

You can learn more about homozygous genotype at

brainly.com/question/1084870

brainly.com/question/14804681

brainly.com/question/22405088

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